ASUS M2A-VM HDMI problem

[satarad]

Hello, I have problem with integrated graphic on this mobo. I have Samsung 20" 204B lcd monitor, and when i connect it with DVI cable, i have major flickering and display tearing issues at native 1600x1200. On lower resolutions like 1280x1024 everything sems to be ok. I updated the bios, i downloaded the latest video drivers, and still no improvement. When i use analog VGA cable, everything is ok, but i bought this mobo especialy becouse the integrated DVI conector, and i dont watn to use it on analog. I checked the monitor on another computer, and its fine. Any suggestions or should i ask for a new one?